Concealed Hinge Connection System for Window Section Bars
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Solution Overview
Problem
Existing window and door concealed hinge systems fail to provide a stable and secure connection to section bars, particularly under bending stresses, leading to potential uncouplings and breakdowns, and require customization for different section bar dimensions.
Innovation Solution
A connection system comprising an anchoring plate and fitting bodies that rotate to secure the fixed arm of a concealed hinge to a section bar, using threaded members and asymmetrical fitting bodies to create a stable and secure attachment that can withstand bending stresses, allowing for standardization across various section bar dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fixed arm is directly inserted in the channel of the section bar with contrasting grub screws or engagement plates, then the connection can be assembled, but the connection becomes unstable under bending stresses when the wing is open
Solution Approach 1:
The connection system combines multiple fastening elements (threaded members engaging the flaps and fitting bodies engaging the side edges) to create a composite connection structure that distributes and resists bending stresses more effectively than single fastening methods
Solution Approach 2:
The fitting bodies are designed to rotate between a first position (allowing insertion) and a second position (providing secure engagement), creating a dynamic connection system that adapts to different assembly stages and provides enhanced stability in the final locked position
2Reliability
If the fixed arm is customized for different section bar dimensions, then the connection can be optimized for each type, but the device complexity and manufacturing costs increase
Solution Approach 1:
The connection system is designed with universal components (anchoring plate, threaded members, fitting bodies) that can be adapted to different section bar dimensions through adjustment rather than complete customization, allowing the same basic design to serve multiple applications
Solution Approach 2:
The system allows for parameter adjustments (such as the positioning and dimensions of the anchoring plate and fitting bodies) to accommodate different section bar dimensions without requiring fundamentally different connection designs, reducing complexity while maintaining optimization
3Ease of manufacture
If symmetrical engagement plates are used, then the assembly is simple, but the detachment resistance is insufficient under bending stresses
Solution Approach 1:
The fitting bodies are designed with asymmetrical features that provide enhanced engagement with the side edges of the section bar, creating stronger resistance to detachment forces while maintaining manufacturability through standardized asymmetric profiles
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The connection system ensures a complete, stable, and secure attachment of the concealed hinge to the section bar, reducing the risk of deformations, extractions, and breakdowns, while enabling standardization and cost-effectiveness across different section bar dimensions.
Implementation Method 1
threaded members (12) acting 'in contrast'
Implementation Method 2
one or more fitting bodies (13) that are adapted to be mounted on the fixed arm (101) rotating around a respective axis of rotation (R) substantially orthogonal to the bottom (201)
Data Source
Figure 1
Figure 2~3
Figure 4A~4B
AI summary
Connection system (10) for the removable connection of an accessory for windows or doors to a section bar (200) of a window or door, wherein the accessory comprises a base body (101) and wherein the section bar (200) has a portion having a bottom (201) which connects to two side edges (202, 203), which extend in a respective flap (204, 205) substantially parallel to the bottom (201), the flaps (204, 205) delimit an access slit to the channel (206) defined between the bottom (201) and the side edges (202, 203), wherein the system is characterised in that it comprises an anchoring plate (11) which is adapted to be attached to the base body (101) of the accessory and which can be inserted in the channel (206) through the slit, wherein the anchoring plate (11) has a first shaped longitudinal edge (17) which is adapted to lean on the free end of one of the two flaps (204, 205) or one of the two side edges (202, 203) and a second shaped longitudinal edge (18) opposite to the first one, at least one threaded member (12) adapted to attach the anchoring plate (11) to the section bar (220), at least one fitting body (13) that is adapted to be rotatably mounted on the base body (101) of the accessory rotating around an axis of rotation (R) substantially orthogonal to the bottom (201) and having a first fitting projection (24a) and a second fitting projection (24b) substantially opposite to each other with respect to the axis of rotation (R), wherein the at least one fitting body (13) is rotatable between a first position, in which the first fitting projection (24a) thereof and the second fitting projection (24b) thereof can be substantially aligned with the longitudinal axis of the channel (206) without interfering with the anchoring plate (11) and with the section bar (200), and a second position, in which its first fitting projection (24a) can be fitted against the second shaped longitudinal edge (18) of the anchoring plate (11) and its second fitting projection (24b) can be fitted against the side edge (202, 203) of the section bar facing the second shaped longitudinal edge (18) of the anchoring plate (11).